Required: Internet connection required to install and play. OS: Windows XP SP3 / Vista SP1 / Windows 7 Processor: Intel Core 2 or better / AMD 64 X2 or better Memory: 1 GB for XP / 1.5 GB for Vista and Windows 7 Hard Drive: At least 10 GB of free space DVD-ROM: 8x Speed Video Card: 256MB RAM with support for shader model 3* Sound Card: Direct X 9.0c compatible DirectX: Version 9.0c (included) Online: 2 – 10 Players Input: Keyboard, Mouse, VOIP headset Supported video cards: Nvidia GeForce 6800 or better, ATI Radeon X1600 or better. Laptop versions of these chipsets may work but are not supported. Updates to your video and sound card drivers may be required.